Hands, feet and nails. Psoriasis on the hands and feet can lead to cracking, blisters and swelling. There are several treatments that can help psoriasis in these areas. A few lifestyle changes also can ease the discomfort of hand, feet and nail psoriasis. Treating hands and feet.

The appearance of psoriasis on the feet is a symptom of the pustular palmoplantar form of psoriasis. It often appears against the background of systemic diseases as a complication of the basic disease.

Palmoplantar pustulosis. The cause of PPP is unknown. It is probably autoimmune in origin as there is an association with other autoimmune diseases, particularly coeliac disease, thyroid disease and type 2 diabetes [].PPP was thought to be a localised form of pustular psoriasis but about 10-20% of patients with PPP have psoriasis elsewhere.

Psoriasis on a foot or both feet may be diagnosed by simple examination, but if there is any doubt then referral to a specialist (dermatologist) may be required. It is unlikely that any specific test will be performed unless there is a suspicion of a fungal infection, when some samples may be taken for laboratory analysis.

Like psoriasis and PsA elsewhere on the body, psoriatic disease in the hands and feet can cause itchy, scaling, reddened skin plaques and painful, swollen joints. Specific types and symptoms of hand and foot psoriasis and PsA, however, can also cause less-familiar skin and joint issues.